Cordage lubrication



Nov. 24, 1936. w. D. HoDsoN 2,062,062

` CORDAGE LUBRIGATION original Filed Deo. e, 1935 Rmx `1 @Meern/@Q52 c@ @my J WOK :Mga

Patented efa 1936 UNITED y STATES PATENT i OFFICE CORDAGE LUBRICATION Walter D. Hodson, Beverly Hills, lll.

originalV application December s. 1935, serial ivo. 53,248. Divided and this application May 28,

1936, Serial N0. 82,333

'z claims. (ci. 11T-5s) A preferred grease may be prepared from a viscous mineral oil, an aluminum soap, and an asphaltic or blown oil. For example, a suitable grease maybe prepared of 39 parts of a heavy oil of 190-210 viscosity at 210 F., one part of aluminum oleate, and 50 parts of a blown oil having approximately 100 melt point and a penetration in the order of 200 at '17 F. The fibrous base is incorporated in the lubricant in proportions depending upon the absorbing qualities of the base.

A well ground, good quality asbestos may be used in the proportions of 10 parts asbestos to 90 parts of grease, but normally, as set forth in my Patent No. 2,028,156, issued January 21, 1936, it is preferred to use mixtures of finely ground and coarsely ground asbestos in which generally about 25 parts of total asbestos is used for 75 parts of lubricant.

Such a lubricant may readily be incorporated in cordage material and thoroughly distributed therein by supplying the lubricant in the form of a thin tube of material surrounded by a lubricant permeable fabric rapidly disintegrated by the lubricant, and forming the cordage yarn about such tube.

The invention is illustrated in the drawing, in

which- Fig.- 1 is a sectional elevation of a nipper assembly or spinning die for the formation of yarn; Figs. 2-8, inclusive, represent progressive changes in the shape of the tube forming die; and Fig. 9

is a cross section of a tube of lubricant.

Fig. 1 shows a conventional form of spinning die I0, in which a ribbon-forming passage or die II has been drilled. The ribbon-forming passage originally has a cross sction, as shown in F 2 and into this a flat fabric ribbon I2 is introduced. The shape of the passage II gradually changes in cross section to bend the edges of the ribbon I2 gradually about until they have substantially met. 'I'hese changes are illustrated in Figs. 3 to 6. At

l5 a point in the die just prior (in the direction of movement of the ribbon I2) to the junction of the edges, a lubricant-feeding device I3 opens into the die adapted to feed'lubricant between the edges of the fabric. This lubricant feeder is preferably flexibly mounted on the member I4 to allow for movement thereof. After passing the lubricant-feeding device, the shape of the die changes to an ellipse, and then to a circle, to force the edges of the ribbon together and into overlapping position. To facilitate overlapping, the

die must be shaped to raise one edge of the fabricl slightly over the other at a point just prior to overlapping.

At the exit I5 of the die I I the ribbon is caught in the fibers I6 at a point just before they are twisted into the yarn Il.

The brous material of such a ribbon is of a.

material, preferably paper, which is highly ab-y sorbent with respect to the lubricant employed and is rapidly disintegrated` by absorbed lubricant. The result is that lubricant is not thrown off in the spool box of the spinning machine, but is immediately available for distribution into the fibers and is forced into even distribution by future twistingl operations and by the disintegration of the fabric.

A ribbon may be used which is not absorbent for or disintegrated by the lubricant, .but which acts as an open mesh retainer therefor until the pressure of subsequent twisting operations in the manufacture of strands and rope squeezes the lubricantthrough the pores of the fabric and into the cordage material. In such case, any

" method of feeding may be employed, and the tube may be loaded with grease in advance.

In practice, the width of the ribbon I2 is slightly more than enough to form a tube of the desired diameter. For example, with a tube having a l diameter of one-sixteenth inch, the ribbon may be about one-fourth inch. The tube normally will have -a diameter less than one-eighth inch, but it will, of course, depend upon the size of the cordage and its absorptiveness.

The term lubricant permeable fabric,'as used herein, applies both to porous fabrics and to fabtherefrom, but the appended claims should beconstrued as broadly as permissible, in view of the prior art.

the lubricant comprises a grease and a highly absorbent fibrous material. y

5. Cordage yarn comprising rope fibers formed into yarn about a porous fiber tube enclosing a plastic cordage lubricant.

6. Cordage yarn comprising rope bers formed into yarn about a porous bered tube enclosing a viscous lubricant comprising a grease and a fibrous materia-l markedly more absorbent than the cordage.

7. Cordage yarn comprising rope fibers formed into yarn about a porous fibered tube enclosing aviscous jelly-like cordage lubricant and brous material markedly more absorbent than the cordage.

WALTER D. HODSON; 

